In a mixing bowl, combine the tzatziki sauce, minced garlic, salt, and pepper. Add the chicken strips, tossing to coat them evenly. Cover and marinate in the refrigerator for at least 2 hours or overnight for the best flavor.

In a separate bowl, mix the Italian breadcrumbs and grated Parmesan cheese. Remove the marinated chicken from the fridge and coat each strip in the breadcrumb mixture, pressing lightly to help it stick.

Place the coated chicken strips on a baking sheet lined with nonstick cooking spray. Refrigerate for 30 minutes to 1 hour—this helps the breading adhere for a crispier texture!

Preheat the oven to 350°F (175°C). Drizzle the chicken with melted butter, then bake for 30 minutes, or until the strips are golden brown and cooked through.

Let the chicken rest for a few minutes before serving. Pair with extra tzatziki sauce for dipping, or serve alongside a fresh Greek salad for a complete meal!